Where do most living things get the energy they need for lite? sither from air or food
either from sunlight or air
O either from food or sunlight
either from air or water
Need now I will mark

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

answerblank(1); ecological; blank(2); evolutionary;